questions about systema PTWs

[ThunderCactus]

has anyone chrono'd an M90 (black) cylinder yet?
sorta want this gun to be MAA legal, so 400fps or less, i hear the M110 (blue) was slightly too high but close, so the newer M90 i imagine is under

[speedjunkiesracing]

Empire Airsoft sells cut down springs for M130 Cylinders too make them shoot just under 400 FPS.
http://www.empireairsoft.com/product...roducts_id=526

[mcguyver]

my results with .25g BBs are as follows:

M90 = 285 fps
M110 = 355 fps
M130 not chrono'd yet
M150 = 455 fps

The numbers will drift a bit, but you should be fine with the M110. Certain APS springs are the same diameter as a PTW spring and can be cut to give you differing FPS without chopping your PTW spring, which cost an insane amount as a replacement part. Aftermarket springs can be had for $10 U.S. or less.

[J-Man19]

i want one

curious, if shoots over 500 fps with .20 would this not classify as a firearm? or are we still in the gray area with that?

[thePiRaTE!!]

Originally Posted by ThunderCactus

hows the grouping?
hows the hopup on it?
whats the range? (good, great, ridiculous)
how consistent is each shot?
and is it compatible with most airsoft accessories? (G&P ACOG, AN/PEQ unit)

Range is superfluous. By that, I mean, your useful accuracy is likely diminished by the time it lands... it all very dependant on how the hop-up likes your BB choice.

Thats brings me to BB choice. People have had various degrees of success in different aspects with different BBs. Some are generally accurate, but occasionally stop-up in the mag and won't feed. Some fee perfectly but if they break they get fragments in the gun, etc, etc...

FWIW, I did a fairly comprehensive shoot-off at 100' between Excel, Metal-tech, Marui and Tippmann .25 BBs. I can tell you that the Tippmann should be avoided at all costs. The Maruis actually won, hitting (as I recall) 18/20 average on an 8.5x11" paper at 100'. The numbers weren't significantly better than the Metal techs or Excels however, but I choose Maruis because they all feed perfectly for me so far. 0 'dry-fires' due to the mag telling the gun its got ammo coming, but its stuck in the mag. I did have feeding issues with the Tippmann and Metal Techs, as did other owners.

Metal techs are better quality than Marui though. They hold together when impacted where the Maruis explode into tiny pieces. This is of concern due to the fact that if the systema doesn't like a particular BB, the nozzle will simply chop it. I haven't had this happen with anything but the Tippmanns thus far, but it would be trouble if it happened with the Maruis because they would disintegrate and likely end up partly in the mechbox via the nozzle. Something to be aware of.

In the end - the systema is a BB machine and ammo selection is more important than with a typical AEG. Bad BBs make for laughable trajectories with a systema, whereas the right ammo will make you quite proud to hold it. That said, its not realistic to expect to hit anything at 300' even though you'll see your BB disppear at least that far. I still wait for better opportunities to fire just like the 'old days' of AEG weilding.

[thePiRaTE!!]

Originally Posted by J-Man19

i want one

curious, if shoots over 500 fps with .20 would this not classify as a firearm? or are we still in the gray area with that?

Sure. But its airsoft-as-replica-gun status superceeds this classification, so either its illegal to import as a replica, or as a firearm. Damned if you do, or damned if you do.

[ThunderCactus]

oh absolutely, i use nothing but KSC perfects in my tightbores
i figure if im gonna buy a 90$ barrel i might as well get the BBs to make it even more accurate

[Mantelope]

I've found that the blues (M110) are shooting just under 400FPS with .2g Guarder BBs... So I'm not exactly sure why you'd buy a modified M130. As for consistency, I chronied my M4A1 today at 327+/-2FPS with .28g Guarder BBs.

[ILLusion]

With an M110 cylinder unit, I also noted that my PTW is hitting pretty much 400fps on the dot with 0.20g BBs.

This corresponds with mcguyver's 355fps with 0.25g.

[mcguyver]

I tried KSC Perfect .25g when I first got my MAX M4 and it chopped them like crazy. It was with the M150 cylinder and I can't discount that as I do use it on occasion (semi only of course). It made quite a mess, enough that it required me to clean the gun. I only use Metal Tech .25s and I have no feeding issues to report and my accuracy and consistancy are fine. Couple that with the fact they are super easy for me to get, well......

I would like to use a heavier BB, maybe a .30g even. But maybe next year when my current case is gone. The MT may not be the absolute best there is, but they are easily available and I have been known to go through alot of BBs from time to time. The BF-3 game in Olds a couple of weeks ago took me through 4400 rounds on 2 9.6v 1600mah batteries at 400ish FPS.

A good way to know if a BB is any good at all, and expecially for a PTW is the squash test. Put a BB in a pair of pliers and squash it. If it shatters, breaks or flakes, avoid it like the plague. The steel nozzle and steel chamber of a PTW firing at 400+++ fps and 15 r/sec are merciless to a crappy BB. They will chop them like mad. The flaking is bad as well as this will lead to deposits in the barrel and hop-up. Avoid these BBs like your life depended on it.

If the BB you test deforms but stays intact, then it should work fine in the PTW and every other gun out there.

[dontask]

Originally Posted by mcguyver

A good way to know if a BB is any good at all, and expecially for a PTW is the squash test. Put a BB in a pair of pliers and squash it. If it shatters, breaks or flakes, avoid it like the plague. The steel nozzle and steel chamber of a PTW firing at 400+++ fps and 15 r/sec are merciless to a crappy BB. They will chop them like mad. The flaking is bad as well as this will lead to deposits in the barrel and hop-up. Avoid these BBs like your life depended on it.

If the BB you test deforms but stays intact, then it should work fine in the PTW and every other gun out there.

I can confirm that for the MT bbs. They just compress and flatten out and it stays in one piece even when flattened to 2mm. No shatters no flakes awesome bbs.

[Swatt Six-Four]

illusion Any chance that could do the same fps test with the m110 also noting the effective range?

[ThunderCactus]

thanks for the info guys i really appreciate it

[speedjunkiesracing]

I am running 12 volt battery with the M110, M130 and M150. Thats why a different spring to get my gun to just under 400fps. Most people seem to run 9.6 volt batteries for the M110 and M130.

[mcguyver]

I use 9.6v for M90-130 and 12v for M150. I think 12v would be fine for M130 as well.